UNIT 6 [cmsc 311]

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Last updated 4:53 AM on 3/31/26
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5 Terms

1
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What is a label and what does it represent?

a symbolic name that represents a memory location. Makes code easier to read and to refer to specific locations inmemory.

2
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What is a pseudo-op?

a message from the programmer to the assembler. Only used in assembler

3
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List the five pseudo-ops.

.ORIG, .END, .FILL, .BLKW, .STRINGZ

4
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What are the two passes of the assembly process?

Pass 1: Construct symbol table → ID’s actual binary address of symbol

Pass 2: Translates instructions into machine code and replaces labels with actual values

5
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Why are both passes necessary?

needed because the assembler must first know the addresses of all labels before it can correctly translate instructions that reference them.